Next…. Both our past and our future depend on amount of matter in
... – Space has stretched since they gave off their light ...
... – Space has stretched since they gave off their light ...
class 1,F10
... —No, the observable portion of the universe is about 14 billion light-years in radius because the universe is about 14 billion years old. ALSO (not in Ch. 1 of the book), we can “see” only about 4% of the universe, 96% is made of “dark matter” and “dark energy”. ...
... —No, the observable portion of the universe is about 14 billion light-years in radius because the universe is about 14 billion years old. ALSO (not in Ch. 1 of the book), we can “see” only about 4% of the universe, 96% is made of “dark matter” and “dark energy”. ...
Recollapsing Universe
... no CC and low density of matter: showed universe must expand • Alexander Friedmann (M, Russian, 1920) solves GTR with no CC but any density of matter: universe can expand forever, or collapse again, depending on mean matter density • Georges Lemaitre (P, Belgian, 1927) rediscovers Friedmann soluti ...
... no CC and low density of matter: showed universe must expand • Alexander Friedmann (M, Russian, 1920) solves GTR with no CC but any density of matter: universe can expand forever, or collapse again, depending on mean matter density • Georges Lemaitre (P, Belgian, 1927) rediscovers Friedmann soluti ...
Advanced AMG EOC Review 2014-2015
... What is air pressure and how is it exerted on objects? What is an instrument that measures air pressure? What causes wind (both the ultimate source and in terms of higher and lower pressure)? What three factors combine to control wind? How does the spacing of isobars on a weather map indicate wind s ...
... What is air pressure and how is it exerted on objects? What is an instrument that measures air pressure? What causes wind (both the ultimate source and in terms of higher and lower pressure)? What three factors combine to control wind? How does the spacing of isobars on a weather map indicate wind s ...
teachers version.
... What is the cosmic background radiation and what does it have to do with the big bang? Student Answer: The universe used to be very hot and emitting light for that temperature. Shortly after the Big Bang, the universe became transparent to this light and it freely and in all directions. As time went ...
... What is the cosmic background radiation and what does it have to do with the big bang? Student Answer: The universe used to be very hot and emitting light for that temperature. Shortly after the Big Bang, the universe became transparent to this light and it freely and in all directions. As time went ...
class 2, S11
... —No, the observable portion of the universe is about 14 billion light-years in radius because the universe is about 14 billion years old. ALSO (not in Ch. 1 of the book), we can “see” only about 4% of the universe, 96% is made of “dark matter” and “dark energy”. ...
... —No, the observable portion of the universe is about 14 billion light-years in radius because the universe is about 14 billion years old. ALSO (not in Ch. 1 of the book), we can “see” only about 4% of the universe, 96% is made of “dark matter” and “dark energy”. ...
Can Gravity Explain the Pioneer 10-11 Anomaly
... vector field called a “phion” field whose curl is a skew field that couples to matter (“fifth force”). The gravitational field is described by a symmetric Einstein metric tensor. • The effective classical theory allows the gravitational coupling “constant” G to vary as a scalar field with space and ...
... vector field called a “phion” field whose curl is a skew field that couples to matter (“fifth force”). The gravitational field is described by a symmetric Einstein metric tensor. • The effective classical theory allows the gravitational coupling “constant” G to vary as a scalar field with space and ...
Aliens
... is therefore ideally suited to determine the frequency of Earthlike planets around other stars. 350 of Kepler’s planet candidates (all sizes) are in the “habitable zone” (where water can be liquid-- see later slide). Right now there is problem on spacecraft, so future is unknown ...
... is therefore ideally suited to determine the frequency of Earthlike planets around other stars. 350 of Kepler’s planet candidates (all sizes) are in the “habitable zone” (where water can be liquid-- see later slide). Right now there is problem on spacecraft, so future is unknown ...
April 10th
... • Very dense – Some have densities of 3 million grams per cubic centimeter – A teaspoon of a white dwarf would weigh as much as an elephant ...
... • Very dense – Some have densities of 3 million grams per cubic centimeter – A teaspoon of a white dwarf would weigh as much as an elephant ...
Curriculum Development Unit Overview DRAFT Planning For Each
... HS-ESS1-1. Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun’s core to release energy that eventually reaches Earth in the form of radiation. HS-ESS1-2. Construct an explanation of the Big Bang theory based on astronomical evidence of ...
... HS-ESS1-1. Develop a model based on evidence to illustrate the life span of the sun and the role of nuclear fusion in the sun’s core to release energy that eventually reaches Earth in the form of radiation. HS-ESS1-2. Construct an explanation of the Big Bang theory based on astronomical evidence of ...
intergalactic move
... Our giant next-door neighbour is called the Andromeda Galaxy. It was named after a Greek princess (read more about her on the following pages!). The Andromeda Galaxy is a spiral galaxy. Unfortunately it’s swirling arms are only visible with a telescope, through binoculars Andromeda just looks like a ...
... Our giant next-door neighbour is called the Andromeda Galaxy. It was named after a Greek princess (read more about her on the following pages!). The Andromeda Galaxy is a spiral galaxy. Unfortunately it’s swirling arms are only visible with a telescope, through binoculars Andromeda just looks like a ...
cont. - UNLV Physics
... B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see." C. Because looking 15 billion light-years away means looking to a time before the universe existed." ...
... B. Galaxies may exist at that distance, but their light would be too faint for our telescopes to see." C. Because looking 15 billion light-years away means looking to a time before the universe existed." ...
Astrophysics
... associated with many different features and signatures of energy release such as solar flares, coronal mass ejections, global waves, radio emission, accelerated particles and many more. Although each of these signatures provides a different insight into the physics underpinning the initiation and ev ...
... associated with many different features and signatures of energy release such as solar flares, coronal mass ejections, global waves, radio emission, accelerated particles and many more. Although each of these signatures provides a different insight into the physics underpinning the initiation and ev ...
Document
... that extends away from the center to several 100 AU. The astronomical unit (1 AU = 1 5 1013 cm) is the mean distance between the Earth and the Sun. The collapsing cloud continues to deposit matter onto the accretion disk, and from there feeds the protostar. Like the planets, the accretion disk rot ...
... that extends away from the center to several 100 AU. The astronomical unit (1 AU = 1 5 1013 cm) is the mean distance between the Earth and the Sun. The collapsing cloud continues to deposit matter onto the accretion disk, and from there feeds the protostar. Like the planets, the accretion disk rot ...
1 From Molecular Clouds to the Origin of Life
... Pascale Ehrenfreund and Karl M. Menten In our Milky Way and in external galaxies, the space between the stars is filled with an interstellar medium (ISM) consisting of gas and dust. The ISM can be divided in various different components with very different physical parameters, ranging from a very ho ...
... Pascale Ehrenfreund and Karl M. Menten In our Milky Way and in external galaxies, the space between the stars is filled with an interstellar medium (ISM) consisting of gas and dust. The ISM can be divided in various different components with very different physical parameters, ranging from a very ho ...
powerpoint - High Energy Physics at Wayne State
... The common red color comes from hydrogen (H II). H II regions contain ionized hydrogen. H I indicates neutral hydrogen, H II is singly ionized hydrogen, and Fe III is doubly ionized iron. ...
... The common red color comes from hydrogen (H II). H II regions contain ionized hydrogen. H I indicates neutral hydrogen, H II is singly ionized hydrogen, and Fe III is doubly ionized iron. ...
Cosmic Rays and Plasma Astrophysics
... matter. -rays (now known to be Helium nuclei) were the least penetrating, while -rays (energetic electrons) were more penetrating. Villard identified an even more penetrating radiation known as -rays, which are high-energy photons. Cosmic rays were discovered when experimenters measured the radio ...
... matter. -rays (now known to be Helium nuclei) were the least penetrating, while -rays (energetic electrons) were more penetrating. Villard identified an even more penetrating radiation known as -rays, which are high-energy photons. Cosmic rays were discovered when experimenters measured the radio ...
Astrophysics 2012_2013 Grade 10 April 29, 2013
... 12. Which two planets rotate slower than they revolve around the sun (in other word, its day is longer than its year)? 13. What is the name of the largest Kuiper Belt Object (KBO)? 14. Which planet has the hottest average temperature as a result of its thick cloud layer, which produces an extreme "g ...
... 12. Which two planets rotate slower than they revolve around the sun (in other word, its day is longer than its year)? 13. What is the name of the largest Kuiper Belt Object (KBO)? 14. Which planet has the hottest average temperature as a result of its thick cloud layer, which produces an extreme "g ...
Radiation: The Key to Understanding the Universe
... It was much later, in 1930 that the line was found to be due to highly ionized Iron ions which survive at the high temperatures prevailing in the corona. 6. Expansion of the Universe and the Big Bang Theory Around 1928, Hubble measured the velocities, using Doppler effect, and distances to several ne ...
... It was much later, in 1930 that the line was found to be due to highly ionized Iron ions which survive at the high temperatures prevailing in the corona. 6. Expansion of the Universe and the Big Bang Theory Around 1928, Hubble measured the velocities, using Doppler effect, and distances to several ne ...
Time From the Perspective of a Particle Physicist
... star formation but indistinct shape. Galaxies are moving away from us with v=Hd v=velocity, d=distance, and H=Hubble constant. Milky Way has inner nucleus, spiral arms (active star formation, halo of old stars (early shape) Cosmology. Hubble law Universe is expanding, gives universe’s age, depends ...
... star formation but indistinct shape. Galaxies are moving away from us with v=Hd v=velocity, d=distance, and H=Hubble constant. Milky Way has inner nucleus, spiral arms (active star formation, halo of old stars (early shape) Cosmology. Hubble law Universe is expanding, gives universe’s age, depends ...
The Early Universe and the Big Bang
... • Someday might be able to detect neutrinos or gravity waves from younger universe, but not yet • But we can explore earlier times by mentally “running expansion backwards” • Figure out what would have happened to cosmic photons and mass particles when universe was denser and cosmic photons had m ...
... • Someday might be able to detect neutrinos or gravity waves from younger universe, but not yet • But we can explore earlier times by mentally “running expansion backwards” • Figure out what would have happened to cosmic photons and mass particles when universe was denser and cosmic photons had m ...
Outer space
Outer space, or just space, is the void that exists between celestial bodies, including the Earth. It is not completely empty, but consists of a hard vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium as well as electromagnetic radiation, magnetic fields, neutrinos, dust and cosmic rays. The baseline temperature, as set by the background radiation from the Big Bang, is 2.7 kelvin (K). Plasma with a number density of less than one hydrogen atom per cubic metre and a temperature of millions of kelvin in the space between galaxies accounts for most of the baryonic (ordinary) matter in outer space; local concentrations have condensed into stars and galaxies. In most galaxies, observations provide evidence that 90% of the mass is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Data indicates that the majority of the mass-energy in the observable Universe is a poorly understood vacuum energy of space which astronomers label dark energy. Intergalactic space takes up most of the volume of the Universe, but even galaxies and star systems consist almost entirely of empty space.There is no firm boundary where space begins. However the Kármán line, at an altitude of 100 km (62 mi) above sea level, is conventionally used as the start of outer space in space treaties and for aerospace records keeping. The framework for international space law was established by the Outer Space Treaty, which was passed by the United Nations in 1967. This treaty precludes any claims of national sovereignty and permits all states to freely explore outer space. Despite the drafting of UN resolutions for the peaceful uses of outer space, anti-satellite weapons have been tested in Earth orbit.Humans began the physical exploration of space during the 20th century with the advent of high-altitude balloon flights, followed by manned rocket launches. Earth orbit was first achieved by Yuri Gagarin of the Soviet Union in 1961 and unmanned spacecraft have since reached all of the known planets in the Solar System. Due to the high cost of getting into space, manned spaceflight has been limited to low Earth orbit and the Moon.Outer space represents a challenging environment for human exploration because of the dual hazards of vacuum and radiation. Microgravity also has a negative effect on human physiology that causes both muscle atrophy and bone loss. In addition to these health and environmental issues, the economic cost of putting objects, including humans, into space is high.